Grok Code Fast 1
xAI · 2025-08-28
Grok Code Fast 1 is xAI's specialized agentic coding model, released in August 2025, built specifically for the loop of modern software development including planning, writing, testing, and debugging. It is a reasoning model that exposes its reasoning traces in responses, supports function calling and structured outputs, and accepts very long contexts to handle large codebases in a single session. The model was made freely available through GitHub Copilot, Cursor, Cline, and other developer tools at launch.